From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [RFC] ARP notify option Date: Tue, 6 Mar 2007 14:52:41 -0800 Message-ID: <20070306145241.5ec1c511@freekitty> References: <20070301164214.4a40bc59@freekitty> <45E7764A.7000100@goop.org> <20070301173030.754514ec@freekitty> <20070305.203536.92584097.davem@davemloft.net> <20070306105132.52c77491@freekitty> <45EDDA8F.5060106@nortel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: xen-devel@lists.xensource.com, jeff@garzik.org, ian.pratt@xensource.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, chrisw@sous-sol.org, virtualization@lists.osdl.org, akpm@linux-foundation.org, David Miller , ak@muc.de To: "Chris Friesen" Return-path: In-Reply-To: <45EDDA8F.5060106@nortel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: virtualization-bounces@lists.osdl.org Errors-To: virtualization-bounces@lists.osdl.org List-Id: netdev.vger.kernel.org On Tue, 06 Mar 2007 15:18:07 -0600 "Chris Friesen" wrote: > Stephen Hemminger wrote: > = > > +arp_notify - BOOLEAN > > + Define mode for notification of address and device changes. > > + 0 - (default): do nothing > > + 1 - Generate gratuitous arp replies when device is brought up > > + or hardware address changes. > = > Did you consider using gratuitous arp requests instead? I remember = > reading about some hardware that updated its arp cache on gratuitous = > requests but not gratuitous replies. > = > Chris I copied the ARP generation from other places that were doing gratuitous ARP already: Xen and irlan. Our local switch used REPLY's to do the same thing. One could imagine making it a ternary value and having 2 generate REQUEST's. -- = Stephen Hemminger